More info on IGDB

"Bokosuka Wars" was released by ASCII in 1985 for an 8-bit home console. This RPG game puts you in the role of King Suren, fighting alongside your soldiers to restore peace to the Kingdom of Suren, which has been conquered by the tyrant Ogoreth of the Basamu Empire. Help your soldiers, who have been transformed into trees and rocks by King Ogoreth's magic, as you make your way to Basamu castle to defeat your arch-enemy, King Ogoreth.